"Philip Eden" philipATweatherHYPHENukDOTcom wrote :

0850z SE F1-2 8km HZ 2Ac070 3Cs200 22.5/19.4 1016.5
RMK: Ac cast, towers developing readily, Cs is the best I can
offer for the dense, fibrous back edge of the receding trough,
though I reckon it may be lower than 20000ft. A little v.thin
Ci way above. Incredibly steamy and sweaty. Two brief
spells of heavy rain at 0505 and 0610-15, totalling 1.8mm,
accompanied by distant TL. Sun came out 0815z.

1150z SSE F2 18km 1Cu040 6Ac070 28.5/18.0 1014.6
RMK: Sunny most of the morning, but increasing cloud
since 1130z, Ac cast thickening into an opaque layer.

Philip Eden
Whipsnade 214m